Various encryption and secure multi-party computation are able to preserve a nearly-perfect confidentiality of almost all computation nowadays, however privacy can be breached even though the computation/communication are perfectly secured. Differential privacy addresses such concerns, but we have lost the nearly-perfect accuracy of computation/query with its probabilistic privacy protection. Can human being have nearly-perfect guarantee (i.e., as strong as that provided by encryption/MPC) for privacy as well? That is the ultimate question I keep asking myself while doing research.